GENERAL BUILDING CONTRACTORS (SIC 15)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
558	SUPERVISORS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	800
567	CARPENTERS	100.0%	0.0%	0.0%	0.0%	0.0%	2,401
869	CONSTRUCTION LABORERS	100.0%	0.0%	0.0%	0.0%	0.0%	2,193
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	5,394
FOOD AND KINDRED PRODUCTS (SIC 20)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
687	BAKERS	26.6%	0.0%	73.4%	0.0%	0.0%	2,567
756	MIXING AND BLENDING MACHINE OPERATORS	57.0%	0.0%	34.8%	8.2%	0.0%	1,573
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	497
888	HAND PACKERS AND PACKAGERS	100.0%	0.0%	0.0%	0.0%	0.0%	559
SUBTOTAL		50.7%	0.0%	46.7%	2.4%	0.0%	5,196
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
567	CARPENTERS	100.0%	0.0%	0.0%	0.0%	0.0%	6,427
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	6,427
TOTAL		84.9%	0.0%	14.2%	0.7%	0.0%	17,017
RELATED PAGES: Estimates by SIC, Estimates by Occupation, Estimates by Occupation within SIC
ABBREVIATIONS: Resp Prot = Respiratory Protection Other PPE = Personal Protective Equipment Other Than Respiratory Protection Vent = Ventilation

*(1) The estimates for each occupation apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC where the agent was observed. Not all SICs were surveyed, and not all agents were observed in all surveyed SICs. (2) When using the estimated numbers of exposures, standard errors associated with estimates should be considered. (3) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories. (4) For a given occupation, the estimated number of potential exposures is not necessarily equal to the estimated total number of potentially exposed workers. For example, a worker may be exposed to the same agent from multiple sources; thus, it is not the worker that is controlled but the exposure. (5) The presence or absence of controls does not imply that controls are necessary or required. The estimates and the controls are strictly based on observations associated with potential exposures.